HiFi tube amp and homebrew guitar preamp

Non-Rickenbacker Guitars & Effects

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espidog
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Re: HiFi tube amp and homebrew guitar preamp

Post by espidog »

I see that the Seeburg amp offers a choice between cathode-biased and fixed biasing. Nice touch. 8)
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Dom
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Re: HiFi tube amp and homebrew guitar preamp

Post by Dom »

Hey Tube_Fan John, do you have any experience running an l-pad between the amp and the speaker to get a saturated sound at lower volumes? Cheap enough to build but for the life of me I can’t find a decent a-b test to see the efficacy. I’m looking at slapping one together for my 24w Supro and one for an Orange AD30.
Tube_Fan
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Re: HiFi tube amp and homebrew guitar preamp

Post by Tube_Fan »

I never used an Ipad. I have some laptops. I have one connected to a Lepai amp and some speakers via the head phone jack.
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Dom
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Re: HiFi tube amp and homebrew guitar preamp

Post by Dom »

D’oh! I should have used a capital L. An L pad is a simple attenuator that shunts a certain amount of signal as heat. I’ve never had a chance to use an attenuator on anything myself. And sorry for the thread jack!
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Re: HiFi tube amp and homebrew guitar preamp

Post by Tube_Fan »

LPAD. I've used those with midrange speakers and tweeters. I never used them with a guitar amp.
Here's a 100W LPAD.
https://www.parts-express.com/parts-exp ... m--260-262
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jps
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Re: HiFi tube amp and homebrew guitar preamp

Post by jps »

I have one of those around here somewhere, brand new in the box, someone could have.
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Kiddwad57
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Re: HiFi tube amp and homebrew guitar preamp

Post by Kiddwad57 »

jps wrote:
Kiddwad57 wrote:I've had to teach students how to turn on a silverface Bassman!
I can see it, now. Someone getting into a car for the first time to learn how to drive.

N@@ß: Hey, how do ya' boot this thing up?
My wife bought a new car. It's really like that!
Don't let democracy end democracy.
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jps
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Re: HiFi tube amp and homebrew guitar preamp

Post by jps »

Kiddwad57 wrote:
jps wrote:
Kiddwad57 wrote:I've had to teach students how to turn on a silverface Bassman!
I can see it, now. Someone getting into a car for the first time to learn how to drive.

N@@ß: Hey, how do ya' boot this thing up?
My wife bought a new car. It's really like that!
We are on the verge of buying a new 2022 model year car. Scary, all the "Save You From Yourself" technology in these things, now. And, not even a real, reliable mechanical parking brake; they are electric with a small switch and motors (I'm sure there is software involved, too) to clamp down on the rear brakes. Just because they can do something, doesn't mean they should. I guess the car companies have a whole lot of IT and software engineers on the payroll that has to do something to justify their jobs. I have read about software/firmware updates that occur automatically that may actually disable the car due to bugs or unsuccessful downloads.
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Kiddwad57
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Re: HiFi tube amp and homebrew guitar preamp

Post by Kiddwad57 »

I love my ‘07 Focus wagon
Don't let democracy end democracy.
Tube_Fan
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Re: HiFi tube amp and homebrew guitar preamp

Post by Tube_Fan »

An Introduction to Scientific Guitar Design
By Donald Brosnac

https://books.google.com/books?id=oejZD ... ar&f=false
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